Journal of Applied Polymer Science最新文献_第4页

Degradation Behavior of Rice Husk Fiber-Reinforced PLA/PBAT Composites in Short-Term Hydrothermal Environment

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-02 DOI: 10.1002/app.56646

Lei Wang, Zidong Wang, Lian Peng, Liping Wang, Bo Deng

引用次数: 0

Improving Tribological Performance of Flame-Sprayed Polyamide Coatings via Incorporation of Oil-Containing Microcapsules

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-01 DOI: 10.1002/app.56592

Zhaoxiang Chen, Linglong Hu, Limei Ren, Jingbo Wang, Lihe Qian

{"title":"Improving Tribological Performance of Flame-Sprayed Polyamide Coatings via Incorporation of Oil-Containing Microcapsules","authors":"Zhaoxiang Chen, Linglong Hu, Limei Ren, Jingbo Wang, Lihe Qian","doi":"10.1002/app.56592","DOIUrl":"https://doi.org/10.1002/app.56592","url":null,"abstract":"<div>\u0000 \u0000 <p>In order to improve the tribological performance of polyamide 11 (PA11) coatings, oil-containing microcapsules, consisting of the heat-resistant polysulfone (PSF) as the wall material and the polyalphaolefin 40 (PAO40) oil as the core material, were fabricated by the solvent evaporation method and then incorporated into PA11 coatings via the flame spray process. The microstructure and tribological performance of PA11 coatings were investigated before and after the incorporation of PAO40@PSF microcapsules. Results show that the synthesized PAO40@PSF microcapsules had an average diameter of 70 μm and exhibited good heat stability up to 380°C. Surface and cross-sectional observations of coatings reveal that PAO40@PSF microcapsules were uniformly embedded in the PA11 coating. The incorporation of PAO40@PSF microcapsules had remarkable influence on the tribological performance of PA11 coatings. Specifically, comparing the PA11/PAO40@PSF composite coating containing 10 wt.% microcapsules to the pure PA11 coating, the friction coefficient and the wear rate were reduced by 67% and 45%, respectively, under the normal load of 370 N and at the rotational speed of 100 r/min. However, further increase in the content of PAO40@PSF microcapsules up to 15 wt.% resulted in a spike in the wear rate due to the decreased coating hardness and bonding strength.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prussian Blue and Polyvinylpyrrolidone-Embedded Hollow Fiber Gradient Polysulfone Membrane for Uric Acid Biosensor Application

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56649

Yi-Kun Wang, Ya-Jun Chen, Yao Pan, Yu Hai-Yin

{"title":"Prussian Blue and Polyvinylpyrrolidone-Embedded Hollow Fiber Gradient Polysulfone Membrane for Uric Acid Biosensor Application","authors":"Yi-Kun Wang, Ya-Jun Chen, Yao Pan, Yu Hai-Yin","doi":"10.1002/app.56649","DOIUrl":"https://doi.org/10.1002/app.56649","url":null,"abstract":"<div>\u0000 \u0000 <p>Traditional biosensors have drawbacks such as temperature sensitivity and cross-reactivity. An innovative UA biosensor was developed. It combined Prussian Blue, carbon nanotubes, PVP with uricase oxidase in a polysulfone hollow fiber gradient membrane, forming a multilayer 3D structure. The optimal pH and temperature for the biosensor were determined to be 8.0 and 37°C, respectively. Electrochemical impedance spectroscopy (EIS) showed that the nanoparticles significantly reduced the working electrode's impedance, enhancing electron transfer. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to study the electrochemical behavior of UA oxidation. A distinct oxidation peak for UA was observed at 0.7 V. The sensor exhibited a sensitivity of 0.33 × 10<sup>−6</sup> A/mM, a linear working range from 1.2 to 12 mM, and a detection limit of 0.424 mM. The porous structure of the membrane and the nanoparticles' synergistic effect contributed to high sensor stability. After continuous use for a week, the sensor maintained approximately 90% of its initial performance. This research demonstrates the effectiveness of our method in developing highly sensitive and stable biosensors for UA detection, providing a promising solution for accurate and reliable uric acid level monitoring.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 13","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Property Study of Polyvinyl Alcohol–Based Hydrogels Loaded With Traditional Chinese Medicine for Textile Applications

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56596

Mengyuan Feng, Yaming Jiang, Zheng Li

{"title":"Preparation and Property Study of Polyvinyl Alcohol–Based Hydrogels Loaded With Traditional Chinese Medicine for Textile Applications","authors":"Mengyuan Feng, Yaming Jiang, Zheng Li","doi":"10.1002/app.56596","DOIUrl":"https://doi.org/10.1002/app.56596","url":null,"abstract":"<div>\u0000 \u0000 <p>This study addresses the limitations of drug-carrying gels regarding mechanical properties, process complexity, and slow-release control by developing a green, nonpolluting, high-toughness hydrogel for traditional Chinese medicine that exhibits excellent slow-release properties. PVA (polyvinyl alcohol) hydrogels, along with various ratios of PVA/HACC (hydroxypropyltrimethyl ammonium chloride chitosan) hydrogels and PVA/HACC/CNW (cellulose nanowhisker) hydrogels, were prepared using a cyclic freeze–thaw method. The results indicated that the maximum tensile strength of the composite hydrogel reached 0.845 MPa, and its toughness was measured at 113.38 MJ/m<sup>3</sup>, demonstrating superior mechanical properties. Berberine hydrochloride (BBR), selected for its low toxicity and excellent antibacterial and antioxidant properties, served as the model drug. The drug-loaded composite hydrogels exhibited a highly porous structure, where the increased HACC content led to larger pore sizes and enhanced drug release rates. Overall, the findings suggest that these drug-carrying gels possess favorable mechanical properties and exceptional drug release capabilities, indicating their significant potential for drug delivery applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143363003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of pH-Responsive Hydrogel Excipient From Karaya Gum for Improved Oral Delivery of Donepezil Hydrochloride in Alzheimer's Disease Treatment

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56630

Jayashree Avvadukkam, Arun Krishna Kodoth, Thency Monnikanda Subramani, Sukesh Ganesh Bhandari, Dhyana Kaiprath, Sarojini Balladka Kunhanna, Deepa Mugudthi Venugopal, Shamprasad Varija Raghu

{"title":"Development of pH-Responsive Hydrogel Excipient From Karaya Gum for Improved Oral Delivery of Donepezil Hydrochloride in Alzheimer's Disease Treatment","authors":"Jayashree Avvadukkam, Arun Krishna Kodoth, Thency Monnikanda Subramani, Sukesh Ganesh Bhandari, Dhyana Kaiprath, Sarojini Balladka Kunhanna, Deepa Mugudthi Venugopal, Shamprasad Varija Raghu","doi":"10.1002/app.56630","DOIUrl":"https://doi.org/10.1002/app.56630","url":null,"abstract":"<div>\u0000 \u0000 <p>The present study focused on fabricating an efficient excipient for donepezil HCl from karaya gum as the base material. The karaya gum was grafted and crosslinked with <i>N</i>-isopropyl acrylamide and <i>N</i>,<i>N′</i>-methylene(bis)acrylamide, respectively, using microwave. The successful fabrication of the resulting hydrogel was confirmed and characterized by FTIR, FESEM, and TGA analyses. Remarkably, the synthesized gel exhibited distinct swelling behavior in different pH mediums ranging from 1.2 to 13. As expected, the gel exhibited an impressive 96% release of donepezil, a widely used hydrophilic drug for treating Alzheimer's disease, in a buffer solution of pH 1.2, within a 48-h timeframe. Kinetic studies further revealed that drug release from the gel aligns with the Higuchi model. Cytotoxicity studies using \u0000 <i>Drosophila melanogaster</i>\u0000 as a model system showed the biocompatible nature of the excipient. This characteristic highlights its potential application as a drug carrier for the oral delivery of Donepezil HCl in treating Alzheimer's disease.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 12","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical Structured Superhydrophobic Surfaces on Graphite Composites 石墨复合材料上的分层结构超疏水表面

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56598

Raphael Raab, Daniel Fotachov, Egbert Oesterschulze, Tobias Melchior, Erik von Harbou, Hans-Jörg Bart

{"title":"Hierarchical Structured Superhydrophobic Surfaces on Graphite Composites","authors":"Raphael Raab, Daniel Fotachov, Egbert Oesterschulze, Tobias Melchior, Erik von Harbou, Hans-Jörg Bart","doi":"10.1002/app.56598","DOIUrl":"https://doi.org/10.1002/app.56598","url":null,"abstract":"<p>A scalable thermal imprinting method and subsequent hierarchical structuring with metal oxide nanostructures forms superhydrophilic or superhydrophobic surfaces on graphite composites. Anisotropically etched silicon wafers serve as basis to create various microstructures by a thermal imprinting on thermally conductive polymer graphite composites. Even after 32 times of embossing, the mold can be reused and restored by pyrolysis, ensuring its longevity and costeffective process. Nanostructuring caused by sputtered aluminum or electron beam evaporated copper on the embossed microstructures and further oxidized with a simple hot water treatment offers a wide range of different hierarchical structures. The combination of microstructures and nanostructures with a low surface energy coating of stearic or lauric acid results in a superhydrophobic surface, which is completely water-repellent with a contact angle greater than 160° and low contact angle hysteresis lower than 5°. This work provides a deeper understanding of the effects of the interaction of aluminum and copper metal oxide nanostructures and thermally imprinted microstructures on surface of graphite compounds. It has been demonstrated that superhydrophobic surfaces can be created with both fatty acids. Lauric acid is easier to use due to its simple handling and reaches a maximum contact angle after 30 min of exposure time with copper oxide nanostructures of over 170°.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.56598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143363002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sequential Reactive Processing for the Synthesis of Branched Polypropylene and Propylene–Ethylene Copolymer

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56659

Jorge Guapacha, Lidia M. Quinzani, Marcelo D. Failla

{"title":"Sequential Reactive Processing for the Synthesis of Branched Polypropylene and Propylene–Ethylene Copolymer","authors":"Jorge Guapacha, Lidia M. Quinzani, Marcelo D. Failla","doi":"10.1002/app.56659","DOIUrl":"https://doi.org/10.1002/app.56659","url":null,"abstract":"<div>\u0000 \u0000 <p>Polypropylene (PP) and random propylene–ethylene copolymer (PEC) with long-chain branches (LCB) have been synthesized from linear polymers by sequential melt reactive processing. The process starts with the grafting of low concentrations of maleic anhydride using an organic peroxide as a radical initiator. Then, halfway through the processing time, the chain-linking agent, m-xylylenediamine (XDA), is added to the reactive medium to generate branched molecular structures. The occurrence of grafting and chain-linking reactions was confirmed by infrared spectroscopy, size exclusion chromatography, and dynamic and transient extensional rheology. Branched polymers with up to ~1 branch per 1000 monomer units were achieved without largely altering the average molecular weights of the original materials and their tensile mechanical properties. The amount of LCB obtained in PEC practically doubles that in the branched PP. Properties such as maximum tensile stress, elastic modulus, and tensile stress at yield were found to be primarily a function of the molecular weight and crystallinity level of the polymers, and not of their degree of LCB. Altogether, the results demonstrate that grafting low concentrations of maleic anhydride onto the polymer with the addition of the chain-linking agent at half processing time is an efficient and practical method to produce polymers with improved melt strength.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 13","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Heat-Setting of Warp-Knitted Silk Patches for Soft Tissue Repairs

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56631

Linya Yan, Jinfeng Wang, Ying Mao, Hongshi Zhao, Wenxing Chen, Wangyang Lu

{"title":"Preparation and Heat-Setting of Warp-Knitted Silk Patches for Soft Tissue Repairs","authors":"Linya Yan, Jinfeng Wang, Ying Mao, Hongshi Zhao, Wenxing Chen, Wangyang Lu","doi":"10.1002/app.56631","DOIUrl":"https://doi.org/10.1002/app.56631","url":null,"abstract":"<div>\u0000 \u0000 <p>Currently, synthetic materials for soft tissue repair are non-biodegradable and rigid, while biodegradable natural polymer materials exhibit low mechanical strength. This study focuses on creating biodegradable silk patches with superior mechanical properties using warp knitting. Four kinds of silk patches were made, degummed, and their structural parameters and mechanical properties were evaluated. An orthogonal experiment was conducted to investigate the effects of heat-setting temperature and time on the patches' mechanical properties. The results show that the #D patch, with its moderate thickness and density, large and concentrated pores, high strength, and low elongation, closely resembles natural soft tissue. After heat setting at 120°C for 3 min, the mechanical properties significantly enhanced (up to 17.1%). The patch exhibited a longitudinal tensile strength of 276.81 N, transverse tensile strength of 330.73 N, burst strength of 1566.5 N, longitudinal tear strength of 307.33 N, transverse tear strength of 124.66 N, longitudinal suture pullout strength of 53.28 N, and transverse suture pullout strength of 73.89 N. This method of using warp knitting and digital weaving technology allows for the preparation of silk patches suitable for soft tissue repair, with high strength, stability, and porosity, making them ideal for tendon and rotator cuff repairs.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 12","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Polyvinyl Alcohol/Carboxymethyl Cellulose Composite Loaded With Chromatin for the Efficient Adsorption of Dibenz[a,h]Anthracene From Aqueous Solutions

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56633

Baopeng Hu, Junsheng Li, Guoxia Huang, Ji Ma, Liujuan Yan

{"title":"Preparation of Polyvinyl Alcohol/Carboxymethyl Cellulose Composite Loaded With Chromatin for the Efficient Adsorption of Dibenz[a,h]Anthracene From Aqueous Solutions","authors":"Baopeng Hu, Junsheng Li, Guoxia Huang, Ji Ma, Liujuan Yan","doi":"10.1002/app.56633","DOIUrl":"https://doi.org/10.1002/app.56633","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, to solve the problems of water solubility and difficulty in separation of chromatin after treatment with dibenz[a,h]anthracene (DBA) contaminants, we successfully prepared a chromatin-based composite for the efficient adsorption of DBA from pollutants. The fluorescence microscopy images and SEM images showed that the composite had dense and porous morphology characteristics, which not only effectively improved the aggregation of chromatin but also showed good adsorption impact. FTIR, TGA, and XRD analyses revealed that chromatin was evenly distributed throughout the composite and formed effective physical crosslinks. Its DBA adsorption efficiency could exceed 93.6%, and its DBA adsorption amount was 0.015 mg·g<sup>−1</sup>. The results of the adsorption isotherm and adsorption kinetics demonstrated that the adsorption of DBA by the composite followed the pseudo-second-order kinetic model (0.9913 ≤ R<sup>2</sup> ≤ 0.9970) and Langmuir isotherm model (0.9930 ≤ R<sup>2</sup> ≤ 0.9982). The results of adsorption thermodynamics indicated that the adsorption process was spontaneous (ΔG < 0). This work provided a new idea and reference for removing DBA from pollutants.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 12","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sunlight Self-Heating Oil-Water Separation Material and Device for Recovering High-Viscosity Oil

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-12-30 DOI: 10.1002/app.56653

Zhuqing Wang, Yiyang Li, Yupu Meng, Zhiwei Huang, Min Wang

{"title":"Sunlight Self-Heating Oil-Water Separation Material and Device for Recovering High-Viscosity Oil","authors":"Zhuqing Wang, Yiyang Li, Yupu Meng, Zhiwei Huang, Min Wang","doi":"10.1002/app.56653","DOIUrl":"https://doi.org/10.1002/app.56653","url":null,"abstract":"<div>\u0000 \u0000 <p>This research employed a simplistic approach to modify polydimethylsiloxane (PDMS) and graphene oxide (GO) onto the surface of the PU skeleton, and then synthesize an oil–water separation material (rGO@PDMS/PU) with photothermal conversion performance and superoleophilic/superhydrophobic properties through high-temperature reduction. The synthesized rGO@PDMS/PU can adsorb organic solvents or oil that are 19–37 times its own weight, while also having a 99.1% oil–water separation efficiency. Additionally, rGO@PDMS/PU also has good photothermal conversion ability. Under the intensity of 1 sunlight (<i>q</i> = 1 kW m<sup>−2</sup>), its surface temperature can reach 95.4°C within 10 s. Relying on the excellent oil–water selectivity and photothermal conversion capabilities of rGO@PDMS/PU, we also build a novel oil-gathering device that can successfully make oil recovery on the water surface in situ. When the device is under light conditions, its crude oil recovery efficiency is nearly four times higher than when there is no light. Therefore, this new oil-gathering device has broad application prospects in high-viscosity oil leakage incidents such as crude oil and engine oil.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 13","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0